1871   struct sh_brace *bb = 0, *blist = 0, *bstk, *bnext;  in expand_arg()  local
1885       for (bnext = bb; bb && bb->active; bb = (bb==blist) ? 0 : bb->prev);  in expand_arg()
1887       j = 1+*bnext->commas;  in expand_arg()
1888       if (old[i] && !bnext->cnt && i-j>=4) {  in expand_arg()
1891           bnext->commas[2] = old[j];  in expand_arg()
1892           bnext->commas[3] = old[j+3];  in expand_arg()
1895             (sscanf(old+j+4, "..%u}%n", bnext->commas+4, &k) && k))  in expand_arg()
1896               bnext->cnt = -1;  in expand_arg()
1899         if (!bnext->cnt) {  in expand_arg()
1900           for (k=0, j = 1+*bnext->commas; k<3; k++, j += x)  in expand_arg()
1901             if (!sscanf(old+j, "..%u%n"+2*!k, bnext->commas+2+k, &x)) break;  in expand_arg()
1902           if (old[j] == '}') bnext->cnt = -2;  in expand_arg()
1905         if (bnext->cnt) {  in expand_arg()
1906           if (!bnext->commas[4]) bnext->commas[4] = 1;  in expand_arg()
1907           if ((bnext->commas[3]-bnext->commas[2]>0) != (bnext->commas[4]>0))  in expand_arg()
1908             bnext->commas[4] *= -1;  in expand_arg()
1912       if (!old[i] || !bnext->cnt)  in expand_arg()
1913         free(dlist_pop((blist == bnext) ? &blist : &bnext));  in expand_arg()
1947     for (bb = blist; bb; bb = (bnext == blist) ? 0 : bnext) {  in expand_arg()
1960       bstk = bnext = bb;  in expand_arg()
1963       while ((bnext = (bnext->next==blist) ? 0 : bnext->next)) {  in expand_arg()
1966         if ((i = bnext->commas[0])>brace_end(bb)) break;  in expand_arg()
1970           bnext->active = 0;  in expand_arg()
1971           bnext->stack = 0;  in expand_arg()
1978       if (!bnext || bb->cnt<0 || bnext->commas[0]>bb->commas[bb->idx+1]) {  in expand_arg()
1990         while (!bnext || bnext->commas[0]>brace_end(bstk)) {  in expand_arg()
1995           while (bnext) {  in expand_arg()
1996             if (bnext->commas[0]<j) {  in expand_arg()
1997               j = bnext->commas[0];// sibling  in expand_arg()
1999             } else if (brace_end(bb)>bnext->commas[0])  in expand_arg()
2000               bnext = (bnext->next == blist) ? 0 : bnext->next;  in expand_arg()
2006           if (bnext && bnext->commas[0]<brace_end(bb)) break;  in expand_arg()